well... I'd think that anybody who "hacks" would first of all, at the first step, open up all their warrock folders and look in everything. When you see "ThemaMain" or whatever its called, open it up... wow guess what? Its the loading song... ok, so change it!
If it wont work, then try using something the same length... maybe they put in some protection, etc.
And go on from there. Any "hacker" should, I would think, do that right off the bat. Not for the theme song, but for any of the more worth while folders and files.
My 2 cents.